Pole for carrying electric cables, telegraph and telephone wires, and other purposes



April 6 1926. 1,579,965

' J. C. STOBIE POLE FOR CARRYING ELECTRIC CABLES, TELEGRAPH AND URPOSE TELEPHONE WIRES, AND OTHER P S Filed Dec. 2'7, 1924 C lB 115:5 I 11 IN V EN r012 Jan/r55 (f ,Sroa 1E ATTORNEYS Patented Apr. 6, 1926.

UNITED STATES PATENT oema JAMES CYRIL STOBIE, OF HENLEY BEACH, SOUTH AUSTRALIA, AUSTRALIA, AS- "SIGNOR 0F ONE-THIRD TO WILLIAM HERBERT WHEADON, OF ADE- LAIDE, AUsrnALIA.

POLE FOR CARRYING ELECTRIC CABLES, TELEGRAPH AND TELEPHON E WIRES, AND

OTHER PURPOSES.

Application filed. December 27, 1924. Serial No. 758,423.

To all whom may concern:

Be it known that I, J AMES CYRIL S'ronm, a subject of the King of Great Britain and Ireland, residing at Franklin Street, Henley Beach, State of South Australia, Commonwealth ofAustralia, have invented a certain new and useful Improved. Pole for Carrying Electric Cables, Telegraph and Telephone Wires, and Other Purposes, of which the following is a specification.

This invention comprises an improved pole adapted to be used for-very many purposes, but particularly for carrying electric cables, telegraph andtelephone wires.

My improved pole consists essentially of two flanged beams of iron or steel, preterably rolled steel joists of I or of channel section, placed one beside the other with their. flanges inward and spaced somewhat apart and at a very slight angle one with the other and held together by means of tie bolts, the space between them being filled with cement concrete.

- In order that my invention may be the more clearly understood I will describe the same with reference to the accompanying drawings in which Fig. 1 represents a side view of a pole in which beams of 1 section are embodied;

Figs. 2 and 3 are cross sectional views upon lines 2, 2 and 3, 3 of Fig. 1;

Fig. 4L represents a side view of a pole in which beams of channel section are embodied; and i Figs. 5 and 6' are cross sectional views upon lines 5, 5 and 6, (3 of Figie.

The beams 10, 1.0 are so placed relativelythe one to the other that at the one end (the top when the post is in position) the in wardly projecting flanges meet or almost meet one another, while at their other ends they are spaced apart say 12 to 18 inches according to the length and cross section of the post.

The two beams 10, 10 are connected to gether by tie bolts 11 passing through their webs and placed at distances of from four to six feet apart along the middle portion of the poleand at gradually lessening distances as the two ends of the polef are ap-.

an'ce pieces of pipe, or other proachdg I H H s iltable matcrl. i; not shown in the draw ings, are placed between the opposing webs of the beams in order tohold them apart while the concrete is being poured.

The space between the two beams 10, 10 is filled with cement concrete 12. This may be'do'ne either before or after erection of the pole. The former is the simpler.

Preferably the two beams, bolted together as described and fitted with distance pieces, are laid upon a wooden or other floor which serves to close the space between the lower flanges (in their present position) of the 3 two beams, and the two ends are closed by boards or other means. The concrete is then poured through the space between the upper flanges and filled in level with the top of same and then allowed to set. In order to reduce the quantity of cement required and to lighten the pole somewhat a longtriangular form with bevelled edges may be placed flat upon the floor and between the edges 01 the lower tlanges before the concrete is poured, and after suliicient concrete has been poured a similar form is placed between the edges otthe upper flanges and pressed down by weights, clamping screws or otherineans so as to force the concrete outward'against the flanges. These forms produce the chases along the two sides of the pole as shown in the drawings.- Should it be preferred to "do so for any reason the concrete maybe poured after the two beams have been placed in vertical position, the concrete being poured from. the top, but in this case it is necessary to secure boards or plates down both sides of the pole to close the spaces between the edges of the flanges of the beams. I

By means of corespositioned along the centre of the pole openings'may be pro vided in the concrete for the securing of cross arms or other, attachments and for the reduction of the weight of the pole.

I prefer to use beams of I or of channel section since that section provides a maximum of strength and the flanges provide a large portion of the mould to take the cement, but beams of other sections may be used,- such'ior instance as T beams or L by way of illustration only and may be increased or decreased according to the purposes for which the pole is designed to be used.

' lVhat I claim is- An improved pole for carrying electric cables, telegraph and telephone wires and like purposes comprising: two flanged meta-l beams positioned one beside the other and at a very slight angle one with the other 10 and with inwardly projecting flan es spaced somewhat apart the entire length of the beams, a plurality of tie bolts passing through the webs of said beams and holding them together, and a cement concrete filling 15 occupying the space between the opposing flanges substantially as described.

JAMES CYRIL STOBIE. 

